SSH -> getting the originating IP of a client using RDP
Hey all This is a total edge case, but I thought it may be interesting to some. We have thin clients, which RDP to a Windows Terminal Server, through which users SSH (using PuTTY) into our Linux server. This isn't flexible (for good reasons which I won't go into here). However, to talk properly to our new EFTPOS units, we need to know the IP of the thin client. Of course, through SSH you only get the IP of the client, which is the Terminal Server. Here's how I fixed it: 1) Add the following line to /etc/ssh/sshd_config, and restarted ssh: * AcceptEnv CLIENTNAME* 2) Added the following to the Windows login script: * REG ADD HKCU\Software\SimonTatham\PuTTY\Sessions\DG\ /v Environment /d "CLIENTNAME="%CLIENTNAME% /f* 3) Result: * ~ $ env | grep CLIENTNAME CLIENTNAME=eric-lmde*
From there, we can do what we needed with the EFTPOS!
Eric -------------------------------------------- Q: Why is this email five sentences or less? A: http://five.sentenc.es
Nice catch !! Cheers Paul On Fri, Jul 24, 2015 at 4:00 PM, Eric Light <eric(a)ericlight.com> wrote:
Hey all
This is a total edge case, but I thought it may be interesting to some.
We have thin clients, which RDP to a Windows Terminal Server, through which users SSH (using PuTTY) into our Linux server. This isn't flexible (for good reasons which I won't go into here). However, to talk properly to our new EFTPOS units, we need to know the IP of the thin client. Of course, through SSH you only get the IP of the client, which is the Terminal Server.
Here's how I fixed it:
1) Add the following line to /etc/ssh/sshd_config, and restarted ssh:
* AcceptEnv CLIENTNAME*
2) Added the following to the Windows login script:
* REG ADD HKCU\Software\SimonTatham\PuTTY\Sessions\DG\ /v Environment /d "CLIENTNAME="%CLIENTNAME% /f*
3) Result:
* ~ $ env | grep CLIENTNAME CLIENTNAME=eric-lmde*
From there, we can do what we needed with the EFTPOS!
Eric
-------------------------------------------- Q: Why is this email five sentences or less? A: http://five.sentenc.es
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Eric Light -
Paul Wilson